Vibration damped portable impact tool

Details Vibration damped portable impact tool Vibration damped portable impact tool

1982-06-21

1984-07-10

Yost, Frank T.

Cutlery

Cutting tools

Cold chisels

30169, 30277, 173139, B26B 300

Patent

active

044584164

ABSTRACT:
A vibration damped portable impact tool comprising a pneumatically powered reciprocating mechanism to which a chisel is connected. In the disclosed tool the chisel is rigidly connected to the piston of the reciprocating mechanism so as to move conjointly therewith. The drive mechanism is arranged in a previously known manner to absorb its own acceleration forces whereby the only vibration forces acting on the tool derive from the chisel in its contact with the work piece. By adapting the spring constant relating to bending of the chisel to the entire mass of the tool such that the resonance frequency of that system is lower than the impact frequency, the vibration forces arising at the working end of the chisel are not transmitted to the tool housing.

REFERENCES:
patent: 1617924 (1927-02-01), Russel
patent: 2634499 (1953-04-01), Bowes
patent: 2655921 (1953-10-01), Haboush
patent: 3496973 (1970-02-01), Ballard

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